The utility model relates to a ventilation type floor which is provided with a floor block body. The floor block body is composed of a face plate and a bottom plate, wherein a plurality of hemispherical protruding faces are distributed on the section of the bottom plate at equal intervals, and grooves are formed in the edges of the periphery of the bottom plate. The face plate and the bottom plate are connected through spot welding, and the part between the face plate and the bottom plate is filled with a foamed cement packing layer. A plurality of ventilation holes are formed in the hemispherical protruding faces in an annular array mode. A fan is installed below the bottom plate, and the fan is connected with a power source through a wire and a switch. The ventilation type floor has the advantages of being simple in structure, convenient to manufacture and the like, is suitable for being used in the environment where bottom face heat is high or moisture is much, can be used in cooperation with a full-steel movable floor and also can be used independently. When the ventilation type floor is needed, the switch can be turned on, the fan is started to rotate, and heat or moisture is quickly diffused.